Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f6e18be747e907…

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 16:45:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: de409cfde821f1d2c8b8c0cec2a49da2 SHA-1: cf64c1a6f7a76d9fb68c9ccdfafc62b1463e6ec6 SHA-256: 66f6e18be747e907222e043f9e798cbe94ab07632aa6fb7a37cd23a46a0b90dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector, indicating a phishing or scam attempt. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/robux-games-game-hack In PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/best-fe-games-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/pokemon-go-free-daily-remote-pass_GM1094591345.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-roblox-codes-for-robux-9_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/roblox-necklace-free-shipping_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-roblox-executor-2021_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/hack-roblox-cs-go-2021_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/roblox-anti-hack-saving_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3205 21860 bytes
SHA-256: 191c55523de9c9f1f777e0eae670c57f5985cc485417498ecee7da84e1b61120
font_01_sfnt_off00006251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6251 18812 bytes
SHA-256: 1c86891a434958755f469b88f580caf751f6bbfe94bde8f6cf7713f7afa322bf

Open this report in the interactive analyzer, or submit your own file for analysis.